Combined nipple and collar



FIG. 1 is perspective view of a combined nipple and collar, showing ournew design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view thereof, with all other sideelevational views being identical; and,

FIG. 4 is a bottom plan thereof.

The ornamental design for a combined nipple and collar, as shown anddescribed.